YES, that title is a lot to chew on. We are later with this post than we wanted to be the case--a continuing habit here that we soon open to break--but we'll get a chance to update
Aaron Judge's follow-on month (now almost halfway in progress) as we dazzle you with data providing a look at the best offensive opening months in baseball history.
First, just how good was Judge's 2025 April? The sports press certainly has a right to fawn over him--Lord knows we need a distraction from all the distractions that are part of the predatory implosion being force-fed to us. We won't keep you in suspense: measuring April performances from 1969 to the present, and using regular ol' OPS as the measure, Judge's first month in 2025 ranks 32nd all-time. Not quite as earth-shattering as the coverage would have you believe, but highly impressive nonetheless.
BUT what we want to do here is celebrate hot starts over a longer time frame (one circumscribed a bit by the fact that until recently, baseball's April was the "cruelest month" in a way only tangentially related to T. S. Eliot's famous observation: for most of baseball history, April was also the shortest month. (We've used 70 plate appearances as the minimum to qualify for inclusion.)
And we also want to look at what happens to these hot starts by season's end. So we've included the year-end OPS--abbreviated in the charts that follow as OPSey--as an added data column in our look at the Top 100 Aprils for hitters. (As you'll see at the end, the data when averaged into time phases will lead us to a kind of "unified field theory" about the impact of steroids on performance--a thorny topic that, like so much of what happens in the fractious 21st century, could use even a tiny smidge of unification.)
SO here we go. The best Aprils--in keeping with our hard-won reputation for antinomianism--start here, presented in inverse order...
(Hall of Famers shown in bold type: active players shown in red--yes, we
think Anthony Rendon is still active...)
As we go along, we will highlight other notable stats: 10+ HRs in April, 30+ RBI, .400+ BA, . 500+ OBP .900+ (!!) SLG. (And there will be a few glitches...we don't want to disappoint the disloyal opposition.)
So it's just under a 1.200 OPS that will get you into the Top 100, and as you might expect it's a mixed bag of big names, journeymen, and flashes-in-the-pan. It's hard to recall, for example, that Aledmys Diaz was ever prized for his hitting, but here's proof that such actually was the case.
Note that deltas (the measure between the April OPS and the OPSey (year-end OPS) are shown in the far right column, and deltas in excess of 30% are bolded, with the greatest delta also done as "code red." Deltas 15% or less are (usually!) bolded and highlighted in a box.
Here in 81-90 land we have neglected to embolden Chipper Jones, who of course is a Hall of Famer.We also see the first instance of a player cranking our so many homers that he makes the list despite hitting less than .300 (no, not Daniel Vogelbach, one of the Tango Love Pie's favorite fetish objects, but Paul Konerko of all people--we promise not to hold it against you. Paul...but will you have any company at all on this list? Stay tuned...)
SO we got carried away and out all of the 30+% deltas in bold red type--it happens. Possibly it occurred because we looked further up the list (even as we look down the list to get to the top...) and saw Pete O'Brien's name again...we wanted to bring that up so that you wouldn't that this, too, was one of the errors to be encountered here.
Note that, in general, the lesser the player in terms of overall career, the greater his delta seems to be. Who says that meritocracy is dead?) But note that Troy Tulowitzki's lower-than-average delta (and we'll share the average with you eventually) is due in part to a season-shortening injury.
Now that we are comfortably into the 1.200+ OPS territory, it's safe to say that Paul Konerko is the only hitter in the "Top 100 Hot April" list to hit less than .300.
There are two more Hall of Famers on this list than the three with bolded names, but it may take years for them to get inducted. And note that one of them has the lowest year-end delta we've seen yet.
Please recall that 1971 was the first year that Willie Stargell did not have to play a significant portion of his home games in Forbes Field. (Also recall that he hit 48 HRs that year...)
Closing in on the top fifty! And there's Pete O'Brien again, the first to appear twice on the list. (But note that Luis Gonzalez took umbrage at this and arranged to have side-by-side entries--though the shape of the stats in those two years is diametrically different. Luis' 13 April HRs in '01 matches Ken Griffey Jr.'s output four years earlier. )
We also have the other hot April 2025 that cracked the Top 100 in the unlikely personage of Jorge Polanco...we await his delta with bated (or is that baited?) breath...
And note that it's Fernando Tatis Sr. having a millennial moment in April 2000, soon followed by a prodigious delta (though not as pronounced as catcher Carson Kelly, who also had a good April this year: we expect another steep decline by season's end).
How many catchers made it onto the Top 100 list? We count four so far--see if you can spot them. (Note: we are not counting Brian Downing...)
More Hall of Famers who aren't in the Hall--which should remind you about that "theory about steroids" that we teased in the title. And so in 41-50 we have a double order of Big Mac--and look at that insanely low delta between his April 1998 numbers and his OPSey (year-end OPS...you can pronounce it "ohp-see," which is all-too-close to "oopsie," which is what McGwire should have said instead of admitting to using steroids, since it's now clear that candor is no longer refreshing or desirable in the shattered-glass world we live in).
It's a cryin' shame that Brian LaHair (one of those truly great, perverse baseball names...) did not happen to be one of those southern hippie long-hair types. And note that we were so stunned by his BAbip that we forgot to bold it. But at least he (barely) qualified to be on the list--surrounded by three Hall of Famers, only one of whom is actually in the Hall...
Here comes the Judge (and we are not surprised to be the only folk to reference that moldy chestnut in the last 37 years). It excited us so much that we forgot that Bryce Harper is an active player (though his April this year was rather inactive)...and, remaining consistent in our inconsistency, we forgot to embolden Von Hayes' post-April swan dive. (It would be interesting to compute the May-September OPS numbers, but some of these guys might sue us for defamation over deltas that could exceed 50%.
Note a third Mark McGwire sighting, this one from 1992, before the Offensive Explosion (1993-2009) and the Steroid Era (arguably 1996-2005). Big Mac slugged .800 at a time when only Jose Canseco claims that he was juicing.
Christian Yelich ups the April HR record to 14, while Rico Petrocelli has tied our main man (Pete O'Brien, for Crissakes!) for the fewest RBI in a "hot April."
WE move into 1.300 OPS territory as we approach the Top Twenty. Have you been counting the Offensive Explosion years that are on this list? Don't worry, we've got that covered, and you'll see that number a bit later.
One thing you don't see much on this list are months with a lot of doubles. Jermaine Dye's 12 doubles in April 2000 ties Ivan Rodriguez (#89) for the most we've seen thus far. That's six hot Aprils with 10+ 2Bs so far as opposed to twenty (20) with 10+ HRs.
In the Top 20 now, and there's another McGwire siting (that makes four...), plus our first glimpse of that other maudit slugger (aka Barry Bonds). We can see why folks got excited about the eternally injured Byron Buxton, the man whom some thought was going to be Aaron Judge.
Nice to see Reggie Jackson up this high on the list...when Reggie got hot, it was truly scary. Somehow so much of what is now part of the "sub-mental media lexicon" for the longball hoopla that still reigns today seems to stem from Reggie and his exploits with the Yankees. (Note, though, that his #19 showing here comes from a season when was still with the Oakland A's...)
ON into the realm of the 1400 and the luxury penthouse commandeered by Barry Bonds. Note that Bonds hit #2 on this list in 1993, before Larry Walker (and Barry himself) surpassed him and former #1 George Brett (who just barely surpasses the eligibility threshold with his 72 PAs). That strongly suggests that Barry's peak talent had been established prior to whatever he did to "supplement" his performance.
We'll get to the steroids "thang" shortly. But let's focus on the two 70s holdovers who set the tone for April peak at the dawn of April's acquisition of enough games player to make such comparisons at least semi-meaningful. One could argue that it's Tony Perez' 1970 season (and his record-setting April) that cemented his impression as a Hall of Fame hitter with those "primordial" sportswriters. Ron Cey had shown a bit of a penchant earlier for fast starts and late-season fadeaways--and 1977 was clearly the apex of that pattern: his 44% delta is the biggest of anyone in the Top 100.
Look at Bonds' 2002 to see the exact opposite--a mere 3% drop from April to the OPSey. Tainted as this stretch of Barry' career seems to be (and the appeasement of such a judgment on the part of what has become the "embedded neo-sabe" press is more of a stain on those folk than it is to Bonds...), the level and consistency of this performance makes it at least as impressive as the achievements of Babe Ruth and Ted Williams.
Our view is that 2002 is the greatest of Bonds' four controversial seasons (all of which were, as you might recall, rewarded with MVP awards)--it established a new level of performance that went beyond the record-breaking homer season of 2001 and prompted opposing managers to simply not pitch to him...even with the bases loaded!
THOUGH consistency is tricky to measure, "delta from early peak" provides an intriguing glimpse into a phenomenon that emerges when we anatomize our Top 100 April hitters across several breakouts
(table at left).
We examine it from the ranked sample of the top 100 first, which establishes its own convergent consistency in the quartile breakout (1-25, 26-50, 51-75, 76-100). The average quartile deltas do not deviate much at all from the overall average decay of just under 24%. There's more deviation when we measure each "tenth" of the sample, but it is not dramatic.
When we look at time ranges, however, we see a greater amount of deviation. The "first divisional era" of expansion (1969-1992) shows a higher delta than any other; it's followed in the time of the "offensive explosion: (1993-2009) with lowest deviation of any segment measured to date. The delta rises again in the years following to the present day (2010-2025) but only about half-way to its 1969-92 level.
AND when we zero in on the most likely period of rampant steroid usage (1996-2005) and calculate the average deltas as show in the bottom three rows, we see that the delta for the "steroid era" portion of the Top 100 is at its lowest aggregate level of all--between 30-35% lower that the deltas for the Top 100 seasons occurring before and after it.
Now what "theory" can we develop from this narrow slice of data? Simply, this: steroids were more than a "performance boost"--the short-term effects were not the key to their value. What they did is permit longer and more intensely focused exercise workouts, which in turn resulted in increased force--one half of what would ensue 15-20 years later when the "launch angle" component joined with added workouts. For players at or near the top of the spectrum, this produced an increase in consistency that had an additive component to the performance improvement.
In the steroid era, such players could achieve ~10-15% more overall from combined elements put in play at the time. It's likely that the lion's share of that improvement came from the added consistency that resulted from the overall process. We can see this in the exceptionally low deltas turned by McGwire in 1998 and Bonds in 2002, as well as in the 2001 season of
Luis Gonzalez, a hitter whose power surge that year spurred rumors and speculation due to the wildfire of conspiratorial thinking that spread through the media in backlash that reached a fever pitch in 2004-06.
Greater consistency in maintaining peak levels can derive from several sources: the steroid era clustered a series of these in veteran players who extended their performance into years not usually associated with such levels of success. We cannot easily separate the factors contributing to that success, but the overall effect appears to have been relatively modest. That won't silence those whose inflammatory rhetoric has exaggerated the effects of steroids and who have cowed much of the present-day media into keeping Hall of Famers out of Cooperstown. As our dear old Dad used to say: it's a semi-rational world.
LET's end with Aaron Judge, whose #32 slot in the April "peak month" doesn't close the book on the debate over the identity of the "greatest right-handed hitter in baseball history"--but it makes it clear that he cannot be dismissed out of hand, either. Time will tell: we close by noting that after a weekend in the hitter's park that is now the home of the no-town-affiliated A's, baseball's reigning behemoth continues to hit at a blistering pace (two homers on Saturday and 4-for-5 earlier today).
We're using OPS for our performance measure, and we have the Top 300 slots for each monthly split for hitters going back to 1901, so we can project where Judge's current May 2025 splits would land in terms of the top historical performances. His OPS thus far in May is 1.238: if he were to finish the month with that number, it would rank 58th all-time for the month. (There are four players at the top of the list for May whose OPS is in excess of 1.500--two of them are Babe Ruth and Barry Bonds. We'll wait 'til the end of the month to tell you the names of the other two. One of them, however, is a right-handed hitter. Stay tuned...)